789561005 has 24 divisors (see below), whose sum is σ = 1013984160. Its totient is φ = 590065920.

The previous prime is 789561001. The next prime is 789561049. The reversal of 789561005 is 500165987.

It is not a de Polignac number, because 789561005 - 2² = 789561001 is a prime.

It is a super-2 number, since 2×789561005² = 1246813161233220050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (789561001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 198890 + ... + 202820.

It is an arithmetic number, because the mean of its divisors is an integer number (42249340).

Almost surely, 2^789561005 is an apocalyptic number.

It is an amenable number.

789561005 is a deficient number, since it is larger than the sum of its proper divisors (224423155).

789561005 is a wasteful number, since it uses less digits than its factorization.

789561005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4109 (or 4092 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 41.

The square root of 789561005 is about 28099.1281893229. The cubic root of 789561005 is about 924.2622820236.

The spelling of 789561005 in words is "seven hundred eighty-nine million, five hundred sixty-one thousand, five".